Maths column + If then Else: show integers?

I am looking to “show recurring tasks” according to:

  • start date
  • frequency in days
  • today.
    For response time matters, I moved many calculations & data in the DataEditor.

I do it by:

  • converting dates into “day number of the year”
  • calculating “(today nb - start nb) / frequency)”

The results is shown via an “if then else” when the division returns an integer.
I could work it around with a GSheet list of integers (1 to 365) but again response time issue.

Is there a trick to identify an integer into the DataEditor?